But one curious symbol has outlasted the test of time: the annoying question mark emoji. When iOS updates include new emojis, the image — of a question mark in a box — stands in for a new ...

While this backward question mark is relatively young, writers have been proposing irony symbols since the 1600s. The equivalent of punctuating your prose with an emoji heart, the love point is ...

"The upper part of the question mark looks like a distorted spiral galaxy, maybe merging with a second galaxy." ESA study scientist Nora Luetzgendorf says that while it's too far away to say for ...